Her top is actually a pink swimsuit and a pink and white checkered skirt. She originally also had lace “arm cuffs.”
Interestingly, this is one of the Barbies whose legs won’t bend (this may have been a hallmark of the “My First Barbie” series).
Outfit: Original swimsuit and skirt
Shoes: Pink heels from eBay
These 80s Barbies, shown in their original outfits, were made to resemble what they looked like in the box as much as possible. However, shoes that have been lost may have been substituted.